How to retrieve the sender smtp email address with Outlook interop?

Question

I'm using c# and Microsoft Outlook interop outlook dll to read and retrieve mails from Outlook (Exchange).

I'm facing issues in parsing the sender email address as the code returns the Exchange address rather than the plain email id. What i want to retrieve is like [email protected] but the output of my code is the Exchange address of the email:

(/O=EXCHANGELABS/OU=EXCHANGE ADMINISTRATIVE GROUP (xxxxxxxxxxx)/CN=RECIPIENTS/CN=XXXXXXX32AD740E69184DC03B2A406F4-XXX XXX)

Code I have tried:

emailItem.Sender

and

emailItem.SenderEmailAddress

How do I convert the Exchange address to an smtp address or how do I retrieve just the smtp address?

Stephen Kennedy Stephen Kennedy · Accepted Answer · 2018-02-13T12:36:03

This code should do it:

string senderEmailAddress;

if (mi.SenderEmailType == "EX")
{
    senderEmailAddress = emailItem.Sender.GetExchangeUser().PrimarySmtpAddress;                    
}
else
{
    senderEmailAddress = emailItem.SenderEmailAddress;
}

Where:

emailItem is a MailItemClass
emailItem.SenderEmailType is a string representation of the type of the e-mail address of the sender of the Outlook item
the Sender property returns an AddressEntry
GetExchangeUser returns an ExchangeUser object that represents the AddressEntry if the address corresponds to an Exchange user
And from there we can retrieve the PrimarySmtpAddress (string).

This should work with Outlook 2010 and newer.

How to retrieve the sender smtp email address with Outlook interop?

1 Answers